Subnormal and Sub

Subnormal adjective - Of a size that is less than average.

Sub and subnormal are semantically related. in lesser topic. In some cases you can use "Sub" instead an adjective "Subnormal".

Sub noun - A large sandwich on a long split roll.

Subnormal and sub are semantically related. Sometimes you can use "Subnormal" instead an adjective "Sub".